A year after I started dating my college friend Minami, things were going smoothly and I, Yusuke, decided to marry her. All that was left for Minami to do was fill out the marriage registration form, but she seemed to be worried about something and was reluctant to do so. I thought it was impossible, but maybe she was worried about the fact that I said I wouldn't have sex until we were married because I wanted to cherish her... I told her that Minami wasn't that kind of girl, but on the night we submitted the marriage registration and became husband and wife, I witnessed the scene where all our happiness collapsed in an instant...